Finding the Fourth Proportional to 8,155.40, 12,212.34 and 5,373.65

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.40 : 12,212.34 = 5,373.65 : x
2. Step 2: Convert to fraction form
   8,155.40/12,212.34 = 5,373.65/x
3. Step 3: Cross multiply
   8,155.40x = 12,212.34 × 5,373.65
4. Step 4: Simplify right side
   8,155.40x = 65,624,779.78
5. Step 5: Solve for x
   x = 65,624,779.78/8,155.40
6. Step 6: Final answer
   x = 8,046.79